i am surprised that particular technology was not used. i think it is vital to understand that unless these officers knew for certain that there were no hostages in that cabin, that the use of the pyrotechnics is doubly questionable. >> radley balko, can you give us the history of the use of these incendiary devices? they are not used that much in fact. >> the incident in waco is the first one that comes to mind. chief stamper and i agree on a lot, but i would disagree the moment that flash grenades -- there are a number of fires that i have reported on and others have that were started by flash grenades as well. in this case, were you have an actual someone who was killed a lot of people, certainly, i don't think anyone would object to the flash grenades. they are used pretty frequently in drug raids, people suspected of nonviolent crimes. i think it's become a little more problematic in that situation. >> the history of them from waco to -- >> of the tear gas? >> of the use of these incendiary devices, yes. >> these particular high-profi